Friction-gear



H. A. Ro'EII/IEII.

FRICTION GEAR.

APPLICATION FILED FEB. I, I92I.

Pana'Aug. 16, r1921.

PATENT ormoni.

HENRY A. ROEIVIER, OF CANTON, OB.'IO.,

rammen-GEAR.

instance.

Specification of Letters Patent.

Patented Aug. ie, i921.

Original application iled April 16, 1920, Serial N o. 374,284. Dividedand this application led February This invention relatesV to frictiongearsand more particularly to a friction gear adapted for use upon theneck or shaftV of a roll or similar element and is a division yof mypending application Serial Number 374,284, for` Improvement in RollingMills,

filed April 16, 1920.

The objects of the invention are the provision of a friction gear uponthe neck or shaft of a roll or the like, said friction gear being undersuiiicient tension to normally rotate the roll but being arranged todisengage from the roll when the same is suddenly stopped.

The above and ancillary objects'are attained by providing a conical ortapered portion upon the neck or shaft of the roll and mountinganinternally conedv geainring upon said conicalor tapered portion, pinsbeing fixed in the outer end of lthe'conical or tapered portion of theroll, a disk or plate being slidably mounted upon said pins and held invengagement with the gear-ring by means of springs Vmounted upon thepins, the gear-ring being thus frictionally mounted upon the roll.

The invention thus set forth in general terms is illustrated in theaccompanying drawings, forming part hereof, in which:

Figure 1 is a fragmentary side elevation, partly in sectionv of an endportion of a roll showing the friction gear embodying the inventionapplied thereto, and

Fig. 2 is an end View thereof.

A practical embodiment of the invention is disclosed in the accompanyingdrawings, forming a part of this specification, in which similarnumerals of reference indicate corresponding parts throughout theseveral views.'

The device is adaptable for use in various devices where it is desirableto provide a gear frictionally mounted upon a shaft or the like andarranged to be released from the shaft under a predetermined strain, butis especially designed for use in a rolling mill where the upper roll ispositively driven from the lower roll, it being, of course,

serial' No. 443,111;

necessary in such cases to provide some means by which the upper rollmay be released momentarily from the drive mechanism in the event thatsaid upper roll is suddenly stopped, this being common in the operationof rolling mills.

In the accompanying drawings the device is shown applied to the shaft ofa roll which is indicated by the numeral 1, a conical portion 2 beingprovided upon the shaft, terminating in the usual wabbler 3.

The gear comprises a ring 4 being internally coned, as shown at 5, toreceive the conical portion 2 of the shaft, teeth 6 being providedaround the periphery of said ring. Pins 7 are fixed in the outerextremity of the conical portion2 of the shaft and extend outwardly tothe end of the wabbler 3, a disk 8 provided with a central openingshaped to receive rthe wabbler 3, being slidably mounted upon said pinsand engaging the gear ring 4. f n

The pins 7 are provided with ysquared portions 9 which are received insquared apertures 10 in the disk 8,.thus preventing accidental looseningof the pins, due to the jarring ofthe mill.

A disk 11 similar to the disk 8, is slidably mounted upon. the endportion of the wabbler and upon the pins `7, and nutsV 12 are providedupon'theeXtremities of the pins, coil springs 13 being interposedbetween the disks 8 and 11 to normally urge the disk 8 inwardly againstthe gear-ring 4,-holding the same in frictional engagement with theconed portion 2'of the shaft. Any desired tension may be placed upon thegear-ring by adjusting the nuts v12 upon the threaded outer end portions14 of the pins 7, moving the disk 8 towardfor from the tapered portion 2of the roll,=thus .providing for compression or expansion of the springs13 as desired, and allowing the gear-ring to slip i permitted to rotateupon the conical or tapered portion of the roll independently of theroll. i

l claim l. In combination with a shaft having a conical portion, aninternally coned gearring mounted upon the conical portion of the shaft,pins mounted in the outer end of the conical portion of the shaft, aplate slidably mounted upon said pins, a second plate spaced from thefirst plate and mounted upon said pins, and springs upon said pinsinterposed between said plates for normally holding the first namedplate in contact with the gear-ring. l

2. ln combination with a shaft having a conical portion, an internallyconed gearring mounted upon the conical portion of the shaft, pinsmounted in the outer end of the conical portion of the shaft, a plateslidably mounted upon said pins, a second plate spaced from the firstplate and mounted upon said pins and means for adjusting` the secondnamed plate longitudinally upon said pins, and springs upon said pinsinterposed between said plates for normally holding the first namedplate in contact with the gear-ring.

3. ln combination with a shaft having a conical portion, an internallyconed gearring mounted upon the conical portion of the shaft, pinsmounted in the outer end of said conical portion, a squared portion uponeach pin, a plate slidably mounted upon said pins and provided withsquared apertures receiving the squared portions of the pins and springsupon said pins engaging the plate for normally holding the same incontact with the gear-ring.

4. ln combination with a shaft having a conical portion, an internallyconed gearring mounted upon the conical portion of the shaft, pinsmounted in the outer end of -said conical portion, a plate slidablymounted upon said pins, a second plate provided with squared aperturesslidably mounted upon the squared portions of the pins, and springsinterposed between said plates for normally holding the second namedplate in contact with the gear-ring.

5. In combination with a shaft having a conical portion, an internallyconed gearring mounted upon the conical portion of the shaft, pinsmounted in the outer end of said conical portion, a plate slidablymountedupon said pins, a second plate provided with squared aperturesslidably mounted upon the squared portions of the pins, and springsinterposed between said plates for normally holding the second namedplate in Contact with the gear-ring, and means for adjusting the firstnamed plate longitudinally upon the pins. v y

6. In combination with a shaft having a conical portion, an internallyconed gearring mounted upon the conical portionaof the shaft, pinsmounted in the outer end of said conical portion, a squared portion uponeach pin, a plate slidably mounted upon said pins and provided withsquared apertures receiving the squared portions of the pins, springsupon said pins engaging the plate for normally holding the same incontact with the gear-ring, and means for adjusting the tension of thesprings.

7. ln combination with a shaft having an enlarged portion, a gear-ringmounted upon the shaft and frictionally engaging the en larged portion,pins mounted in the enlarged portion of the shaft, a plate slidablymounted upon said pins, a second plate spaced from the first plate andmounted upon said pins, means for adjusting the second named platelongitudinally upon the pins and springs interposed between said platefor normally holding the first named plate in contact with thegear-ring.

8. In combination with a shaft having an enlarged portion, a gear-ringmounted upon the shaft and frictionally engaging the enlarged portionthereof, pins mounted in the enlarged portion of the shaft, a plateslidably mounted upon said pins, a second plate spaced from the irstplate and mounted upon said pins and springs upon said pins interposedbetween said plates for normally holding the first named plate yincontact with the gear-ring. y v

i In testimony that I claim the above, l have hereunto subscribed myname.

HENRY A. ROEMER.

